目的探讨延髓背外侧综合征的临床及影像学特点。方法回顾性分析40例延髓背外侧综合征的临床及影像学资料。结果 40例均急性起病,常见的临床表现有头晕或眩晕;吞咽困难、饮水呛咳、声音嘶哑;Horner征;眼震;交叉性感觉障碍;共济失调。头颅CT对病灶的检出率低,MRI检出率高。40例均好转出院。结论临床表现和MRI检查是诊断延髓背外侧综合征的主要依据,及早行头颅MRI检查明确诊断,防止误诊,MRA、CTA、DSA检查可进一步明确病因。 Objective To investigate the clinical and imaging features of medullary dorsolateral syndrome. Methods Retrospective analysis of 40 cases of medullary dorsolateral syndrome clinical and imaging data. Results 40 cases were acute onset, common clinical manifestations of dizziness or dizziness; dysphagia, drinking water cough, hoarseness; Horner sign; nystagmus; cross-sense disorders; ataxia. Head CT detection of the lesion rate is low, MRI detection rate. 40 cases were better discharged. Conclusions Clinical manifestations and MRI are the main basis for the diagnosis of medullary dorsolateral syndrome. Early diagnosis of craniocerebral MRI can be used to confirm the diagnosis and prevent misdiagnosis. MRA, CTA and DSA can further clarify the etiology.